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Cold Start Injector Time Switch Test

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  1. Unplug cold start injector time switch connector. For cold start injector time switch location, See Figure.
  2. Using ohmmeter, check resistance between terminals "STA" & "STJ" at appropriate temperature. See Fig 1. See COLD START INJECTOR TIME SWITCH SPECIFICATIONS table. There should be continuity between terminal "STA" and ground. Replace switch if not within specification.
NOTE: "STA" terminal is fed current from ignition switch during cranking. "STJ" goes to cold start injector.
COLD START INJECTOR TIME SWITCH SPECIFICATIONS

Ohms Condition
30-50 Below 59°F (15°C)
70-90 Above 86°F (30°C)
30-90 "STA" To Ground
Fig 1: Checking Typical Cold Start Injector Time Switch
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